Valve-spring lifter



Dec. 14 1926;

J- M. SEAWELL VALVE SPRING LIFTER Filed July 21, 192

V r gg d? -1 I I, i I i Ursa-rs sir i ssgrsrarir JOSEPH sEAWnLLQoF Bron- Morin,' vrnernmifgissrsivonor] ONE-laminate onner,

' QLYVALVELSIERINGJQ-IETER.

' "Applieetionfiled$11121,

The present invention 7 relates to pet valves of internal combustion engines,

' and morerparticular lyr todevices for lifting the valve springs for example, to permit the remova-ljor-repair of associated parts or for;othenpurposes, L 1, J 7

A-nj obj ect, of the invention is to provide a device for this purpose which shallbe simple 7 in construction and Which'can be easily V. sociatedwith the-valve,ste1n;;} 5

placed in position andi vquiekly operated. flAnother-ohject ,ofthe invention is to provide'gsucha device which doesnot require the use; of a rench ;or other, tool to effect its operation.

access to the pushrbds' and; other I parts as {A- still further object is to provide device-which isstrong, durable, self-aligning andwhiohisadapted toniaintain the "valve springsfixed in lifted positionwhen desired;

Other objectsand advantages of the -i'n- .vention will appear from thelfollowingwde scription, taken in connection with the. ac

,companying drawings, which illustrate, by way of example, a preferred embodiment of the invention and inwhich: r

- Fig. 1 is a-perspective viewof a pr'eferred formof'valve spring lifter embodying the present invention v I I IFigQ. 2 is a side emit-lbs 56f aid iiiftr" showing the lifting lever arm infully aised j:

position; and

- Fig; 3 is aside elevation-of s aid'lift'er,

V said lifter andhendin'g said" perti'on*arri 11t .we lesl e eto s sh i r s-y l n of-parallel links esnephews to' the'lugf idej'thereo f, and receive r fhetweentheinn r their lovver ends an'inter- -mediate portioniof' the li fting lever'23r partly broken away and "partly in c section, showlng the lifting lever arm, in intermedi 1 ate raisedyposition, and showingithejapplif cation of: the lifter to the valve-spring ajn internal combustion 'vengine.v

f ,Referringin detai :mane-Padding, in

' r parts: throughout, thewalv'e ".spring'xlifterf here 1 illustrated 7 shown]. as including ,a I 4 "valve vspring seat engaging platemember .which may be .providedj witlr one or more slots 10 designed to receive thevalve st-ends,

j ably comprises a right angularlyhent metal F member, having ,afvertieg l- 'porti0n'.11;1 and a T112 bent ver forwar ly, rjtbfi' flf iW 8 :nur hevifihe "Prefera y which like reference numerals-indicate. like the spring: seatsrestingon the of the seat ,engagingplatetlg; The sprin'gfseat engaging late 9 s prefertop horizontal p .t

v l 2cm;,away-gpern ngi er sm th -11ft ofthe 1924 ssr'slvzv n. if if square hole to'jorrn an upperguidel hearing I for the. p i n13, which; is preferablysquare cross section and has sliding contact with the insidejofthe vertical portion 11 ofthe' lifte lTheho liZq l a f p i if ing plate lower guide and sliding bearing for} the ,Vpin' guide plnjlgl -Theguide pin-1'3 alignin'g'the valve spring lifter Withfrespect Whi'chliis. usuallvprovide'd v v'ith a groove 20' "or hem-2rd hothjthefforrnation "of the bottoms of: their g'liideholding it in "en'- ,gagement with the casing during the opieration; of the lifter;

theretlir'oughl afld preferably rivetedftherein (9 'preterablvsquarejflap 14 punched out thereof {and bent downwardly" to form a .13.grits-11mm;pistesis thus adapted to lide' upwardly and downwardly o ns the v isp'referably' forined or i providedvat' its top with a; shoulder 15 having a flat'faoe adaptedito're'st against a portion ,ofthe engine casing. 16, forthe'p'urpose of "steadying the lifter in' joperation'and f Near-cits lower-end the ipin l ii has" I fa lovverv pivot hearing n'rier nloer22, vvhich is 5 i'preferably' forked r-toir'eceive' one-fend of a I 1 lifting lever" 23' which is pivotally' attached v thereto. fllhevertical portion 11, of the lifter has extending"rearvvardlyitherefrom an up-v flp'er pivot flug z fivhichis preferably f rmed y punching ioutf'a lportion of the back of flat 'beveledforY Pout aw ortiono 27; with es in, on'tact in its rajisdiposition; the

verlf.

d the o se Fpin QtS-ithe'liftinig lever chithe u'pper edgeo the l1 ftin'g lever 23' QBIisbentdownwardly as shown infthe draw P ings; and is"provide df'with the upperiand V 7 lower, utigi-vvay portions' 28j and 29 for clearance purposes; in order that the intake and st eam-se ts n "t prevent the 1135.15

. ward movement by the pressure of the valve I spring or spr ngs. ln practice, however, the

the upper and lower pivots and 31, as

shown in Fig. 2,.and that when the lifter is in this positlon it is locked aga nst clownlifting lever is likely to be arred while the work is being carried on, and as aprecaution against dropping of the lever to its lowered position, with a consequent lowering ofrthe valve springs, a catch 32 may be provided on one ofthe links 25, having 'a pin extending through said link and into a registering opemng orhole 83 provided in the lifting lever. .Or holes may be drilled straight through the lever and links, to register in the raised position of said levcr, and through which a'pin or nail may be in-. sorted to fasten the lifter against downward movement. 7

In operation, wh'en the valve spring or springs are to be raised, the lifter is advanced to position and the lower end ofthe pin 18 is set on the lower edge of the valve spring chamber 19, and the upper shoulder lc5=of said pin is advanced to abut the upper outer face/1.6 of the valve spring chamber. It will be understood that the lever 23 1s lowered when the lifter is thus placed in position, and thatthe valve spring seat engaging plate 9 is directly under the Spring seat 35, thevalve stem or stems standing in the opening or openings 10. I If now the lever 23 be raised to its upper position, it willraisethe plate 9 bymeans of the links 25, and the plate .9 will carry upwardly with it the valve springs and spring seats, after which- -the lifting lever may be locked in position. The valve stem 36 may now be raised and the push rod 37 removed,-or the I valve stem pin 38' maybe removed .Qflllld the valve taken out, or other partsremoved or repaired. r I v r I,

It will be observed that when the lifter embodying the present invention is in raised position, the only part below the plate 9 near the valve'stemsis the pin13,whioh,

being arranged betw.een' the slots 10 leaves the chamber 1.9entirely open for the. fully length of the lifter on each side of said pin, and there is thus a maximum space provided for the insertion of tools with a clear op n" space in which the work can be done.

It is also to be noted that thelifte'r is raised by a single, quickly effected, upward 'movement of the lever arm, which is locked in position at itsuppermostpoint, and, also,

that the c away P n n the le e an the beveledportiqn of the upper pivotlug 2 perm tthe levero b a sed a hlg a possible, where it will be out of theway.

I It will also be seen that the lifter is self aligning, without :the use of plates or other parts extending across the chamber 19, which leaves the chamber unobstructed for observation and working.

It will be further observed that the lifter, while strongly made, is simply constructed of relatively few parts, and that the lifter is quickly operable without the application of wrenches, pliers or other tools and without the loss of time incurred by a lifter of the screw type. i

The length of the lifting lever and its formation, and the construction of links,

give a sufficient leverage toenable the lifter to be raised quickly and easily through a maximum distance by a single movement and by the application of a relatively small force.

What is claimed is l. A valve spring lifter comprising a plate having a vertical portion and a horizontal portion, said horizontal portion having valve stem receiving openings therein, said vertical portion having a guide pin flap provided with a guide pin opening, said hori zontal portion having a vertical punched out guide bearing and a guide Pinopening adjacent said bearing, a guide pinpa'ssing through said guide pin openings and having aligning portions at its top andbottom, a lower pivot lug fixed to said pin, an upper pivot lug punched out of said vertical portion, a lifting lever pivoted to said lower lug, and a pair of links pivoted to said upper lug'and to said lever, said lever having upper and lower cut away clearance portlons. 1 i

2. A valve spring lifter comprising a vertically movable plate having valve stem receiving openings therein, a vertical pin passing loosely through said plate adapted to guide said plate in its vertical movement, a

out forming a guide pin bearing, apin having a smooth surfacepassing loosely through said bearings, a lever pivoted to said pin,

and a. link connection I I I pivoted to said lever and-to said plate. I j I 4:. A'val-ve spring lifter comprising aplate having a vertical portion and a horizontal portion, said vertical portion having a bent out pivot lug and a guide pin bearing, said horizontal portion having valve stem receivingopenings therein and aguide pin bearing, a guide pin passing through said bearings a lifting lever, afixed pivot connesting said lever .tofsaid pin, anda connection pivoted to Said bent ont pivot lug, and to said leveizu "5, A- valve springlifter compfising a plate having a verticalportion and ahorizontal portion; saidvertioal' portion having a bent out pivot lug and a guide pin. bear1ng,'said' horizontal portion having valve stem receiving openings therein and a guide pin beering; a guide-pin passing through said been.

ings, a lifting lever iwfixed pivot connect} ng' szud' lever to said p n, anda connection andfto pivoted to Saidfbentontpivot lu' said lever, said bent out pivot-lug dmving a beveled portionfand said'lever adapted to contact therewith. i

V Intestimony whereof I affix my signature JOSEPH SEAWELLQ 

